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The odds that a book will be favourably reviewed by three independent critics are 5 to 2, 4 to 3 and 3 to 4 respectively.what is the probability that of three reviews a majority will be favourable.

Rajeev Singhania

12 Years agoGrade 12th Pass

1 Answer

Harsh Patodia

10 Years ago

R1, R2 and R3 be probability of favourable reviews

R1 = 5/7

R2 = 4/7

R3 = 3/7

For Majority atleast 2 should be favourable.

i.e. R1xR2xR3’ +R1x R2’xR3 + R1’xR2xR3 + R1R2R3 ( where R’ represent not favored)

Just plugin values and get the answer.

Please send the full solution as soon as possible 🙏

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